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Increased energy efficiency with metallic magnetic drive pumps:
innovative new non-metallic shroud eliminates eddy current losses

Press Release

Zofingen, 15 May 2006

  

Eddy current free shroud

CP's new non-metallic shroud for its metallic MKP magnetic drive pumps.

Increased energy efficiency with metallic magnetic drive pumps:  innovative new non-metallic shroud eliminates eddy current losses

At ACHEMA 2006, CP is unveiling a non-metallic shroud developed for its MKP sealless magnetic drive pumps.

CP Pumpen AG is an independent, innovative European company headquartered in Switzerland, with a subsidiary in Germany. In Switzerland, CP Pumpen AG produces premium quality sealless centrifugal magnetic drive pumps and a range of process and special purpose pumps to meet the most rigorous requirements. Since 1948, CP Pumpen AG has been a partner and supplier of pumps to customers in the chemical, pharmaceutical, biotechnology, food and paper industries.

The pumps in the MKP series are metallic, sealless magnetic drive centrifugal pumps built to EN-22858. They use the reverse drive principle, having the magnetic rotor on the outer diameter of the shroud and the driven magnet on the inner and atmospheric side of the shroud. The impeller rotates about a stationary axis integrated in the suction side of the casing, minimising axial and radial forces and thus making the conventionally required second bearing redundant. MKP pumps need just one single bearing and consequently have fewer parts. This gives users of CP pumps an unrivalled advantage since they require a far smaller inventory of spare parts and can minimise maintenance costs.

By developing the non-metallic shroud for the MKP series, CP Pumpen AG can now offer a cost-neutral solution to improve the energy efficiency of magnetic drive pumps by eliminating eddy current losses. Compared to the metallic shrouds that are typically used, this gives end-users the following benefits:

  • No eddy currents are generated in the non-metallic shroud during operation.
  • Due to the lower energy requirements, outdated chemical process pumps with mechanical seals can now be replaced with CP’s sealless magnetic drive pumps without changing the motor power requirements.
  • The overall efficiency of existing CP pumps can be significantly increased by replacing existing shrouds with the new non-metallic shrouds to eliminate eddy current losses.
  • As pumps with non-metallic shrouds require less energy, smaller motors can be used, which in turn reduces capital costs.
  • The new non-metallic shrouds have the same dimensions as the existing metallic shrouds so retrofitting is possible.
  • The non-metallic shroud is designed for PN16, identical to that on the MKP pumps. It has good chemical resistance and can be used at temperatures up to 200°C.
  • Use of non-metallic shrouds does not generate additional costs.

***

CP (www.cp-pumps.com) is one of the industry leaders in premium quality pump technologies that enable industrial customers to achieve sustainable environmental improvements in their fluid handling systems. Based in Zofingen, Switzerland, the company now operates in more than 40 countries and generates 82% of total sales outside Switzerland.

  
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